singleton postcode nsw Home ›› Postcode Finder ›› NSW ›› Singleton Singleton local listingsThe suburb of Singleton is located in NSW and has a postcode of 2330. Free singleton business listing! 1Singleton High School75-81 York St 02 657111992St Catherine's Catholic College30-40 Queen St 02 657896003Singleton Christian School23 Maitland Rd 02 65721011 View more business listings in singleton Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.